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Describe the points on the database file for application software?

Describe the points on the database file for application software? The database file is used to process the data from the database file from the program to apply the command on the database file on the application software to process and give the output data to the output unit of the user interface of the application software. The database can be managed through the different types of manipulation command on the relational database model. Database file is to provide the information when the user wants to access the file or any information about the particular subject or object in text information then the relational database model file provide the information about the attributes values of the subject or object information from the record to show on the table format of the relational database model. The application software shows the information about the object or subject on the output interface of the particular option on the application software to provide the information which is b...
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What do you mean by the specialization in the DBMS?

What is meant by the specialization in the DBMS model?

Specialization in the DBMS model

Specialization is the process to show the “entity set” have their “set of characteristics” which known as “sub classes” of the “type of entity” where the ‘type entity’ is called “super class” in the model of the “specialization” of “super-classes”.

Points to be remember in the specialization in the DBMS

  • In the specialization super class is a type of entity.
  • The characteristics of the entity are sub classes.
  • Set of sub classes of the entity of the superclass is a specialized model in the database model.
  • The set of the sub classes are also called special classes of the type entity which is super class in the specialization.
  • It is very different from or opposite from the generalization of the model.

Where the generalization is to show the similarities and the specialization is to show the differences of the entity sets in a both type of entity sets such as higher level entity sets and lower level entity sets.

Specialization is basically shows the differences among the higher level and lower level entity sets using with the characteristics of sets which means the sub-class of the type of entity that is super class in the specialization model.

The specialization is used to shows the sub classes are only to specific characteristics for the entity sets. Such as entity “A” is for “X” characteristics similarly the entity “B” for “Y” and “C” for “Z”.

What is meant by the specialization in the DBMS model?
In the typical model of special there are A, B and C entities following their characteristics are X, Y and Z. In the above model on the top appears is the super class which is the organization of the model.
Here is the tool of specialization below from the super class to shows the differences of the particular entity for specific attribute of the sub class.
Such as entity “A” is for “X” attribute or characteristic similarly “B” is for “Y” and “C” for “Z”. X, Y and Z are the characteristics to shows the specific properties of every entity or sub class.

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